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. 2024 Jan 8;24:35. doi: 10.1186/s12877-023-04645-z

Table 2.

Comparative analysis of the frequency of PIP before and after intervention in the control and intervention groups

Study phase General Intervention group Control group RR
Pre-intervention
 PIP, % (n/N) 37.7 (55/146) 40.6 (28/69) 35.1 (27/77) 1.16 (0.76–1.76)
Post-intervention
 PIP, % (n/N) 31.7 (90/284)* 32.2 (46/143)* 31.2 (44/141)* 1.03 (0.73–1.45)

PIP, potentially inappropriate prescribing; RR, relative risk

*p = 0.862 in within-group analysis (χ² test) and p < 0.001 in between-group analysis (McNemar test)